T2LowEx - Transformation from conventional heating grids towards low-temperature-heating grids through measures on the secondary side

District heating currently supplies more than 20% of the Austrian delivered energy for space heating and domestic hot water purposes. This share has increased significantly within the past 10-15 years and it is expected that this trend will continue in the coming years. However it is assumed that expansions of district heat supply in Austria will primarily occur in areas, in which heat networks already exists to some extent today.